Hotel broiler



H.'c.MAuL.

HOTEL BROILER.

APPLICATION FILED AUG.8, I9I9.

1,425,501 Patented Aug. s, 1922.

4 SHEETS-SHEET I.

H. C. MAUL.

HOTEL BROILER. A APPLICATION FILED AUB, 19|9. 1,425,501. Patented Aug. 8, 1922,

4 SHEETS*SHEET 2.

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".24 Z4 Jaa4 f /44 Q19- Zf i2 9 50 I y i i i l vwefnboz ffy/y @jaL/ my, l' l H. cr.. MAUL. HOTEL BROILER. APPLlVcAVTmn-'msn Aucas. 1919.

Patented Aug. 8, 1922.

4 SHEETS-SHEET 3.

H. C. MAUL.

HOTEL BROILER.

APPLICATION man Aus.8. 1919.

Patented Aug. 8, 1922,

4 SHEETS-SHEET 4.

UNT@ STATES sanear jessica.

HENRY C. VMAUIJ, OF DETROIT, MICHIGAN, ASSIGNOR TO THE MICHIGAN STOVE COM- PANY, 0F DETROIT, MICHIGAN,

A CORPORATION 0F MICHIGAN.

HOTEL BROILER.

Massei.

Application mea Auguste, 1919.

To all whom t may cof/wcm.'

Be it known that I', HENRY C. M AUL, a citizen of the United States of America, residing at Detroit, in the county of'Wayne and State of Michigan, have invented certain new and useful Improvements in Hotel Broilers, 0f which the following is a speciication, reference being had therein to the accompanying drawings.

This invention may be considered an improvement in connection with the gas broiler disclosed by my Patent No. 1,091,943, granted March 31, 1914, also my patentY on piping for gas ranges, No. 1,088,7 89, granted arch 3, 1914, the patents being directed to cooking ranges that may be used-as individual units or in a battery. The first mentioned patent discloses a gas broilerincluding ai broiling rack or grid which may at all times be held in a horizontal plane, and which may be projected forwardly when desired, or raised' and lowered with respect to the burner ame, provision being made for manually manipulating the rack and for affording a counterpoise therefor, so that the movement of the rack will be steady at all points in its travel. The last mentioned patent includes a novel piping so that a plurality of cooking ranges may be arranged in battery formation and the necessary independent connections made for the burners of the cooking top and the burners for an oven, with proper controlling devices for each range unit.

The present invention may be characterized in the following particulars.

' First, the gas broiler, has a novel detachable or removable burer structure that may be easily, quickly and bodily removed from the range, so that the burners may be readily cleaned. Associated with the burners are removable heat retainers or flame spreading devices, which may be removed with the burner unit, taken off of the burners, and thoroughly cleaned. With such a burner unit it is possible to maintain the range in perfect working order and thus insure a high degree of cooking efiiciency at all times.

Second, the broiling rack or grid is of novel construction and is supported so that it may be safely and easily shifted without any jarring or sudden action. A counterpoise for the broiling rack or grid insures a perfect balance of the same, sothat with little effort a cook or operator of the range Speccation of Letters Patent.

Serial No. 316,098.

may raise and lower the grid. As an incidental feature, provision is' 'made so that the counterpoise may be regulated, andin either instance, there is that nicety of adjustment which permits of broiling being eXpeditiously and properly performed.

Third, the range includes an oven or warming compartment so disposed that the broiler burner unit may be utili'zed as a. source of heat for the oven, and provision is made for a pro er ventilation of the oven and accessibility t creto.

Fourth, the constructive arrangement of parts is such as to provide a compact structure either as a unit or in battery formation, and this is ofutmost importance for hotel kitchens. The general design of the range, particularly the oven compartment relative to the boiler compartment, permits of the movable broiler rack or grid being placed -in a loading or unloading position still within the area of the range structure, and those controlling devices essential for the range Patented aug. s, ieee.

are closely assembled thereabouts convenient to the cook or operator of the range, and thus providing a built in or self contained structure which materially facilitates the work of a cook or chef.

Further features of my invention together with the advantages derived therefrom, will hereinafterappear as the nature of the invention is better understood, and reference will now be had to the drawings, wherein Figure 1 is a vertical cross sectional view of the broiler range, showing the broiler grid in an yactive cooking position by full lines and ina partially lowered-position by` dot and dash lines;

Fig. 2 is a vertical longitudinal sectional view of the boiler range;

Fig. 3 is a front elevation of the same in battery formation;

Fig. 4 is a vertical cross sectional view of a portion of a broiler range illustrating another form of operating mechanism for the movable broiler grid;

Fig. 5 is a horizontal sectional view of the same;

Fig. 6 is a plan of one of the heat retainers or llame spre-aders;

Fig. 7 is an end view of the same as supported by burners, and

Fig. 8 is a perspective view of the detachable burner unit.

partment 2 which is set on the legs andv riveted or otherwise connected thereto. The broiler compartment 2 is formed by a rear wall 3, side walls 4 and 5, and a set in or raised bottom wall 6, said bottom wall be-l ing set above the lower edges of the walls 3, 4 and 5 so as to provide clearance for a portion of the movable grid operating mechanism and the counterpoise therefor.

T he broiler compartment 2 also has a front wall 7, the lower portion of which is vertically disposed and the upper portion at an inclination, with these portions out away to provide a large front opening 8 so that access may be had to the broiler compartment. The front wall 7 forms a frame around the opening 8 and this front Wall and the walls 3, 4 and 5 have the upper and lower edges thereof inturned or flanged so as to provide supporting ledges 9 and 10, the former resting on the legs 1 of the range.

Mounted on the upper ledges 10 of the broiler compartment and suitably connected thereto is an oven compartment 11 substantially rectangular and havin the top wall 12 thereof provided withu a Suitable exhaust flue or pipe 13 adapted to communicate with the atmosphere. In horizontal section the oven compartment 11 is of less area than the broiler compartment 2, and the oven compartment is therefore set in from the front of the broiler compartment, thus providing plenty of clearance at the opening 8 so that a cook or chef may readily place foodstuff in the broiler compartment and at the same time have access to the ovencompartment 11.

The oven compartment 11 has a front wall provided with a longitudinal burner opening 14 and a door opening 15, said `door opening being closed by a pivoted door 16 Supported by brackets 17 pivotally held by bearlngs 18 on the side walls 19 of the oven compartment. Each of the brackets 17 is provided with a weight or counterpoise 20 so disposed as to maintain the door either in a closed position or in an open position, the latter being defined by the door 16 contacting with the upper edge of the door opening 15. In this position, as clearly shown in Fig. 1, the door 16 is horizontal ,providing access to the oven compartment,

Without the door 16 interfering with operations in front of the range or adjoining ranges which would be prohibitive if hinged doors were vused on the oven compartments when the ranges have battery formation.

In the upper part of the oven compartment 1l is a deflector or baiiie 21 supported by the front and rear walls 22l and 23 respectively of the oven compartment, and said baffle is disposed below the exhaust flue or pipe 13 so that heat products cannot immediately escape from the oven compartment. oven also cooperate With brackets 24 in supporting a fixed heat retainer and shield 25 Within the lower part of the oven co-mpartment, said heat container or shield being in the form of a brick or vitreous body which has vits lower fa'ceexposed and its upper face covered by a metallic face 26 which permits of a shield being used as a permanent shelf or support within the oven compartment. The brackets 24 are in spaced relation ,to the side walls 19 of the oven so that heated air or burned gases may pass outwardly from beneath the heat retainer 25 and upwardly between the brackets 24 and the side walls of the oven without necessarilyl contacting with foodstuffs or dishes placed Ton the plate 26. Besides the brick 25 serving as a heat retainer it also serves as an insulator for preventing the plate 26 from being warped or-distorted, and a detachable shelf 27 may be placed above the plate 26 and supported by guides 28 at the upper edges of the brackets 24. Since the door pivots are located at the side walls o-f the oven compartment, as clearly shown inV Fig. 2, there is suflicient clearance for dishes or utensils on the detachable shelf 27, and it is in this connection that the oven is primarily intended for warming purposes, either for dishes or utensils or foodstuff previously cooked in the broiler compartment 2.

Considering the broiler burner and its supporting means the front wall 7 has connections 29 for a longitudinally disposed gas supply pipe 30 and the connections 29 are of such construction as to abut andbe connected to similar connections on an adjoining range, when ranges are laced in battery formation, as clearly broug t out in Fig. 3, and specifically referred to in my Patent No. 1,088,789. The connections 29 have upright pipes 31 at the sides of the opening 8, and the upper ends of said pipes vare provided with valves or gas cocks 32 disposed in parallelism with the inclined portions of the front wall 7. These valves or cocks are adapted to cooperate with a longitudinalbracket 33, at the rear wall 23 of the oven compartment 11, in supporting a removable verted U-shaped hollow frame or manifold The front and rear walls of the Y 34 which has its ends terminating in air mixers 35 adapted to fit on the nipples or jets 36 of the valves 32 and properly position and support the ends of the manifold 34 relative to the front wall of the broiler compartment. The manifold 34 is shaped to clear the opening 8, as clearly shown in Fig.

3, and said manifold has -a plurality of parallel burners 37 adapted to have the rear closed ends thereof rest on the longitudinal bracket 33, at the juncture of the oven and broiler compartments. The burners 37 extend through the opening 14 of the oven and by reason of being disposed at an obtuse angle to the plane of the manifold, said burners are supported in a horizontal plane below the shelf 26 within the oven and at the open upper end of the broiler compartmentv 2. The burners 37 .have the lower walls thereof provided with gas outlet openings or orifices 38 as best shown in Fig. 7, so as to provide diverging flames from each burner when the gas is ignited, and by closely assembling the burners there will be a horizontal flame or fire bed between the oven and broiler compartments so that the downwardly projecting flames may broil foodstuffs within the broiler compartment and heat radiating from the burners enter the oven compartment for warming purposes.

On the burners 37 are assembled detachable heat radiators or llame spreading devices, each comprising slotted burner members 39 provided with fins or bars 40, some of which connect the burner members so that the members will be held in sets. Each burner member is somewhat convexo-concave so as to rest or bear on the upper wall of the burner, and the fins or bars extend downwardly and outwarly from said burner members so as to cooperate with said members in embracing the burners, thus preventing lateral displacement of each set of The lateral portions of the fins or bars 40 are ina plane with the lower walls of the burners 37 and will tend to deflect and disseminate the ames main-,-

tained by the burners, besides serving as heat retainers. The burner membersl can be easily and quickly assembled on the burners and as readily removed, and this may be accomplished, with the burner unitbodily removed from the broiler compart- -ment or as the burner unit is placed in or removed from said'broiler compartment.

By reference to Fig. .1 it will be observed that there is sufficient clearance at the lower part of the oven compartment to permit of the burner unit being pushed, inwardly to remove the air mixers or ends of the manifold 34 from the ljets or nipples of the valves 32, and then the burner unit may be bodily withdrawn. It is therefore; possible to thoroughly clean the burners; as well as the member supported thereby, and with the burners supportingv the burner members as shown in Figs. 1 and 2, an even and constant heat is assured at the juncture of the oven and broiler compartment,

The bottom wall 6 of the broiler compartment 2 has straps or bearings 41 for tubular rock shafts 42 and 43 with the ends thereof provided with upwardly extending arms 44 which extend through slots 45 in lthe bottom wall 6. The shafts are two in number and consequently there are two sets of arms 44 and suspended between the upper ends of the sets of arms is a grid holder 46 for a movable grid 47 The. grid 47 is movably supported on anti-frictional rollers 48 carried by the holder 46 and accidental displacement of the grid is prevented by a locking device 49, carried by the holder 46 andl extending into the grid 47. After the grid 47 is placed in the holder, the locking evice 49 may be installed and said locking device will limit the movement of said grid on its suspended holder.

One end of the rock shaft 43 has a bell crank 50. One of the arms' of said bell crank is connected by a coiled retractile -spring 51 to the frontwall 7 of the broiler` As shown in Fig. 1, the

campartment. spring 51 is under tension, but the tension thereof may be increased when the shaft 43 is rocked. The other end of the bell crank 50 is slotted and connected to the curved inner offset end 52 of an operating lever 53, said operating lever being pivotally supported by a bearing 54a on the side wall 5 of the broiler compartment. The lever 53 extends through a slot 54Et in the front wall 7 of the broiler compartment and is provided with a pivoted locking pawl 55 which normally engages a rack 56 on the front wall 7 at the side of the opening 8. The locking pawl 55 holds the lever 53 against accidental adjustment, but when the locking pawl is manually shifted out of engagement with the rack 56, the outer end -or handle of the lever 53- may be raised and lowered so that the inner end 52 of said lever will impart a rocking movement sets of arms and the suspended holderv 46, causes said shafts to rock in synchronism and raise and lower the grid 47. As shown in Fig. 1, the grid is supported in a horizontal plane beneathy the burner unit, and by lowering the outer end of the lever 53 the grid may be shifted downwardly and outwardly; a lowered position being shown by dot and dash lines in Fig. 1. As the grid is lowered the weight of the same, plus that of the suspended holder 46 and the food stuffs which may be on the grid, is sufcient to carry the grid to its lowermost position,

lwithout any great effort on the part of the said spring is increased and is sufficient to prevent a sudden or jarring descent of the grid' The lever 53 may be locked in a lowered position and the grid 47 may be shifted so that foodstuffs may be easily removed from the grid or placed thereon, this being accomplished at the opening 8 without any interference by controlling devices about said opening. When the operating lever 53 is raised, the retractile force of the spring 51 assists in this respect, so that the grid, whether loaded or unloaded, is balanced by a smooth and even movement in the broiler compartment. The spring 51 represents a resilientor automatic counterpoise for the grid, and by reference to Figs. 4 and 5 of the drawings, it will be observed that two springs 57 are employed and provision made for increasing or decreasing the tension of each spring. With this form of my invention, the rock shaftl 43 has a crank 58 at each end thereof connected by the springs57 to pivoted levers 59 supported by brackets 60 on the front wall 7 of the broiler compartment. The pivoted levers 59 are shaped so that when in a lowered position the springs 57 are yunder greater tension than when the levers are swung to a raised position, and itis through the medium of such tension regulating means that the counterpoise may be made more or less sensitive.

It is possible to use a simplified form of operating lever, as shown in Fig. 4, wherein one of the arms 44 has a rearward extension 61 to which is pivotallyV connected the curved inner end of an operating lever -or rack bar 62 that is shiftable in the inclined portion of the front wall 7 and movable into and out of engagement with a fixed keeper 63, carried by the inner side of the wall 7. The operating lever or rack bar 62 may be raised out of engagement with the keeper 63 and shifted to raise and lower the grid.

The front wall 7 and the rear wall 3 of the broiler compartment 2 are connected by supports or brackets 64 on which may be placed a drip pan or utensil 65, and the location of this pan or utensil does not interfere with the movable grid 47 or the raising and lowering mechanism therefor.

1. A cooking range having uninterrupted.

side Walls so that ranges may be placed in contact side by side, a front inclined wall provided with an opening, a burner unit for the cooking range and entirely in front of said range, said unit comprising an inverted U-shaped manifold adapted to be supported in a planev parallel to said front inclined wall and receive gas at either end thereof, said manifold extending lalong the upper and side edges of the front wall opening, and a plurality of burners carried by the top of said manifold and disposed in a plane at an obtuse angle to the plane of said manifold.

2. A cooking range as in claim 1, and demountable heat retaining members astraddle solely supported on said burners and extending between said burners.

3. A cooking range having uninterrupted side walls so that ranges may be placed in contact side by side, a front inclined wall provided with an opening, a grid at all times within the range and adapted to be lowered to expose the front portion thereof at the .provided with an opening, a burner at the top of said compartment, anda manifold for said burner forming a frame about the n top and sides of the front opening of said broiler compartment so that said frame and opening will provide clearance for the removal of matter vertically from the front vend of the broiler compartments.

5. The combination set forth in claim 4, and a grid located below the burner and movable into and out of the opening of the broiler compartment. v

6. In a range, the combination of a broiler compartment having an inclined front wall provided with an opening, said opening permitting of matter being vertically removed from the front end of the broiler compartment, an oven compartment on said broiler compartment communicating therewith, a burner having its rear ends supported at the juncture of said compartments, gas valves at the lower edge of the inclined front wall of the broiler compartment, and means at the sides and top of the opening of the,

broiler compartment providing clearance for the opening and connecting said burner to said gas valve. 4

In a gas range, a broiler compartment having a front wall opening, an oven compartment on said broiler compartment communicating therewith, a removable burner unit at the juncture of said compartments, a manifold for said burner unit, a grid beneath said burner unit, a holder for said grid,.means operatable through the broiler compartment front wall4 for moving said holder, and a -counterpoise below said broiler compartment for the grid and holder therein.

8. In a gas range, a broiler compartment having an inclined front wall provided with an opening, van oven .compartment on said broiler compartment communicating therewith, heat supplying means at the juncture of said compartments and bodily removable from the front of the range, a grid movable to and from said heat supplying means and shiftable towards the front of said range to Y. be exposed so that matter may be removed vertically from the grid through the wall Y opening, and covered heat retaining means in said oven compartment above said heat supplying means and affording a shelf.

9. The combination with a broiler having a front Wall, a burner having a manifold, and a grid movable to and from the burner, of supporting means for the grid comprising rock shafts, arms at the ends thereof, a holder suspended from said arms and supporting said grid, operating means for said grid supporting means extending through the front Wall of the broiler and adapted to swing a grid under the manifold, and a eounterpoise for said supporting means and said grid.

10. The combination 'set forth in claim 9 wherein the counterpoise is in the form of a tension device that may have its tension regulated at the front wall of a broiler.

l1. The combination of a burner, a manifold for the burner, a grid, operating means adapted for swinging said grid under said manifold, means disposed to resist the swinging movement of said grid, and means adapted to vary theresistance of said means.

12K.. In a broiler having a front wall, and 'I manifold being removable as one unit from i the front Wall of the broiler, means for storing and deflecting heat in the broiler, a grid below the burners, operable through the front wall of the broiler and adapted to be raised and lowered and shifted towards the front of the broiler, means limiting the forward movement of the grid, and means for counterpoising the weight of said grid.

13. The combination Set forth in claim 12 and an oven compartment above said burners, a heat retaining shelf, and a counterpoised door. A

In testimony whereof I alii'x my signature in the presence of two witnesses.

HENRY e. MAUL.

Witnesses:

WM. EAGAN, CONRAD W. S'roRK. 

